CVE-2026-105697

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Source

https://cve.org/CVERecord?id=CVE-2026-105697

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105697.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-105697

Aliases

GHSA-w794-rj3p-xv45

Published

2026-10-05T20:16:58Z

Modified

2026-10-07T02:47:36Z

Severity

9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Details

Langflow is a tool for building and deploying AI-powered agents and workflows. Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and (before 1.10.3) wrapped in bash -c "exec {command} ...". Any user able to reach the MCP server settings ("Settings → MCP Servers → Add MCP Server", POST/PATCH /api/v2/mcp/servers/{server_name}) or to build a flow with the MCP Tools component could add a "server" whose command is an arbitrary OS command (touch, rm -rf, a reverse shell, ...). The command runs on the Langflow host as the Langflow process user as soon as Langflow tries to connect to the server (listing servers, loading tools, running the flow) — even when the UI then reports that the stdio server failed to start. With the default LANGFLOW_AUTO_LOGIN=true, GET /api/v1/auto_login hands out a token without credentials, so on an exposed instance running the default configuration this is reachable without an account. AUTO_LOGIN is documented as a development-only setting; with it disabled, any authenticated (non-admin) user can exploit it. This issue is fixed in Langflow 1.10.3, langflow-base 0.10.3, and lfx 1.10.3.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-78"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105697.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "0.1.2"
                },
                {
                    "fixed": "0.10.3"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/langflow-ai/langflow

Affected ranges

Type

GIT

Repo

https://github.com/langflow-ai/langflow

Events

Introduced

76a3a2a46122e560af6e90788adc4304857193ea

Introduced

Fixed

a8d94f9f4fb34fe488ec317bdade4e83611ef17a

Fixed

a8d94f9f4fb34fe488ec317bdade4e83611ef17a

Fixed

eba285edf1dd4a33bf23a9cb8113c991fcdf3d1d

Fixed

efbc4a16e639409d938a4883463d27ef0bc637a0

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "1.1.2"
        },
        {
            "fixed": "1.10.3"
        },
        {
            "introduced": "0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*

1.1.2

1.1.3

1.1.4

1.10.0

1.10.1.rc0

1.10.1rc3

1.2.0

1.3.0

1.3.1

1.3.2

1.3.3

1.3.4

1.4.0

1.4.1

1.4.2

1.5.0.post1

1.8.0.rc0

1.8.0.rc1

1.8.0.rc2

1.8.0.rc3

1.8.0.rc4

1.8.0.rc5

1.8.0.rc6

1.8.1

1.8.2

1.8.3

1.9.0

1.9.3

1.9.4

1.9.5

1.9.6

v1.*

v1.10.1

v1.10.2

v1.9.1

v1.9.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105697.json"